Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method of transmitting an uplink data channel and receiving a downlink data channel by user equipment, the method comprising: receiving repetitive transmission information for the uplink data channel or the downlink data channel from a base station; and receiving the downlink data channel from the base station or transmitting the uplink data channel to the base station based on the repetitive transmission information, wherein the repetitive transmission information indicates information on a number of repetitive transmissions for the uplink data channel or the downlink data channel, wherein the repetitive transmission is performed based on a unit of a slot or a unit of a sub-slot, wherein a redundancy version sequence for the repetitive transmission is formed of 6 elements, and wherein: each element of the sequence is set to one of 4 patterns; a first element pattern is identical to a fifth element pattern of the sequence; a second element pattern is identical to a sixth element pattern of the sequence; and wherein the redundancy version sequence for the repetitive transmission is Determined to be one of {0, 2, 3, 1, 0, 2}, {0, 0, 0, 0, 0, 0} and {0, 3, 0, 3, 0, 3}; wherein the repetitive transmission information is received through Downlink Control Information (DCI), wherein the DCI includes a field indicating the number of repetitive transmissions, and wherein when a value of the field indicates a maximum value of the number of repeated transmissions, information on the maximum value of the number of repetitive transmissions is received through RRC signaling.
In wireless communication systems, user equipment (UE) and base stations exchange data over uplink and downlink channels. To improve reliability, especially in challenging environments, repetitive transmission techniques are used. However, existing methods may not efficiently manage redundancy versions or fail to optimize transmission granularity, leading to inefficiencies in resource usage and performance. This invention addresses these issues by providing a method for UE to transmit uplink data and receive downlink data with controlled redundancy. The UE receives repetitive transmission information from the base station, specifying the number of repetitions for the uplink or downlink data channel. Repetitions occur at the slot or sub-slot level, ensuring fine-grained control. The redundancy version sequence for these repetitions is structured as a 6-element sequence, where each element follows one of four predefined patterns. The sequence is designed such that the first and fifth elements are identical, and the second and sixth elements are identical. The redundancy version sequence is selected from predefined options: {0, 2, 3, 1, 0, 2}, {0, 0, 0, 0, 0, 0}, or {0, 3, 0, 3, 0, 3}. The repetitive transmission information is conveyed via Downlink Control Information (DCI), which includes a field indicating the number of repetitions. If this field reaches its maximum value, the exact maximum number is provided through Radio Resource Control (RRC) signaling. This approach ensures efficient redundancy management while maintaining flexibility in transmission configuration.
2. The method according to claim 1 , wherein the sub-slot is configured with 2 or 3 symbols.
A method for wireless communication involves configuring a sub-slot in a time-frequency resource grid to support flexible transmission of data or control information. The sub-slot is a smaller time unit than a standard slot, allowing for reduced latency and improved efficiency in wireless networks. The sub-slot is configured with 2 or 3 symbols, where each symbol represents a discrete time unit within the sub-slot. This configuration enables dynamic allocation of resources for different types of transmissions, such as uplink or downlink data, control signaling, or reference signals. The method may also include determining the duration of the sub-slot based on system requirements, such as the type of transmission or the network conditions. By adjusting the number of symbols in the sub-slot, the system can optimize resource utilization and minimize delays in data transmission. This approach is particularly useful in scenarios requiring low-latency communication, such as real-time applications or machine-type communications. The method may be implemented in wireless communication systems, including 5G and beyond, to enhance flexibility and efficiency in resource allocation.
3. The method according to claim 1 , wherein the maximum number of repetitive transmissions indicated by the repetitive transmission information is 6.
This invention relates to wireless communication systems, specifically methods for managing repetitive transmissions to improve reliability in data transfer. The problem addressed is ensuring successful data delivery in environments with high interference or signal degradation, where single transmissions may fail. The solution involves controlling the number of times a transmitter can repeatedly send the same data packet to increase the likelihood of successful reception. The method includes determining a maximum number of repetitive transmissions for a data packet based on predefined transmission information. This information is used to set a limit on how many times the packet can be retransmitted if acknowledgment from the receiver is not received. The maximum number of repetitive transmissions is set to 6, balancing reliability and resource efficiency. The method also involves monitoring the transmission attempts and stopping further retransmissions once the limit is reached, preventing unnecessary use of network resources. Additionally, the method may include adjusting the transmission parameters, such as power or modulation scheme, during repetitive transmissions to adapt to changing channel conditions. The system ensures that the transmitter does not exceed the predefined limit, maintaining efficient use of bandwidth while improving data delivery success rates. This approach is particularly useful in wireless networks where packet loss is common, such as in IoT or mobile communications.
4. The method according to claim 1 , wherein the number of repetitive transmissions is 3 or 6.
The invention relates to a wireless communication system that optimizes data transmission reliability by adjusting the number of repetitive transmissions for critical messages. The system addresses the problem of ensuring message delivery in environments with high interference or signal loss, where a single transmission may not be sufficient. By repeating transmissions, the system increases the likelihood that the intended recipient successfully receives the message without requiring additional power or bandwidth. The method involves sending a message multiple times in succession, with the number of repetitions configurable based on network conditions or message priority. Specifically, the system supports either three or six repetitions of the same transmission to balance reliability and resource efficiency. Fewer repetitions (three) may be used for less critical messages or stable network conditions, while more repetitions (six) are applied for high-priority messages or in challenging signal environments. This approach reduces the need for retransmission requests, improving overall communication efficiency and latency. The selection of the repetition count is dynamically adjusted to adapt to varying channel conditions, ensuring optimal performance without unnecessary overhead.
5. A method of receiving an uplink data channel and transmitting a downlink data channel by a base station, the method comprising: transmitting, to user equipment, repetitive transmission information for the uplink data channel or the downlink data channel; and transmitting the downlink data channel to the user equipment or receiving the uplink data channel from the user equipment based on the repetitive transmission information, wherein the repetitive transmission information indicates information on a number of repetitive transmissions for the uplink data channel or the downlink data channel, wherein the repetitive transmission is performed based on a unit of a slot or a unit of a sub slot, wherein a redundancy version sequence for the repetitive transmission is formed of 6 elements, and wherein: each element of the sequence is set to one of 4 patterns; a first element pattern is identical to a fifth element pattern of the sequence; a second element pattern is identical to a sixth element pattern of the sequence; and wherein the redundancy version sequence for the repetitive transmission is determined to be one of {0, 2, 3, 1, 0, 2}, {0, 0, 0, 0, 0, 0} and {0, 3, 0, 3, 0, 3}; wherein the repetitive transmission information is transmitted through Downlink Control Information (DCI), wherein the DCI includes a field indicating the number of repetitive transmissions, and wherein when a value of the field indicates a maximum value of the number of repeated transmissions, information on the maximum value of the number of repetitive transmissions is transmitted through RRC signaling.
The invention relates to wireless communication systems, specifically to techniques for managing repetitive transmissions in uplink and downlink data channels between a base station and user equipment (UE). The problem addressed is optimizing the efficiency and reliability of data transmission by defining structured redundancy version sequences and control signaling for repetitive transmissions. The method involves the base station transmitting repetitive transmission information to the UE, which specifies the number of repetitive transmissions for either the uplink or downlink data channel. Repetitive transmissions are performed in units of slots or sub-slots. The redundancy version sequence for these repetitions consists of six elements, each set to one of four predefined patterns. The sequence follows specific rules: the first element matches the fifth, and the second matches the sixth. Valid sequences include {0, 2, 3, 1, 0, 2}, {0, 0, 0, 0, 0, 0}, and {0, 3, 0, 3, 0, 3}. The repetitive transmission information is conveyed via Downlink Control Information (DCI), which includes a field indicating the number of repetitions. If the field value represents the maximum allowed repetitions, this maximum is signaled separately through Radio Resource Control (RRC) signaling. This approach ensures efficient control of repetitive transmissions while maintaining flexibility in sequence configuration and signaling overhead.
6. The method according to claim 5 , wherein the sub-slot is configured with 2 or 3 symbols.
The invention relates to wireless communication systems, specifically addressing the configuration of sub-slots within a transmission frame to optimize data transmission efficiency. The method involves dividing a transmission frame into sub-slots, where each sub-slot is assigned a specific number of symbols to carry data or control information. The key aspect of this configuration is the flexible allocation of symbols to sub-slots, allowing for either 2 or 3 symbols per sub-slot. This flexibility enables dynamic adjustment of the transmission structure based on varying channel conditions, traffic demands, or quality of service requirements. By supporting multiple symbol configurations, the system can balance between data throughput and control overhead, improving overall resource utilization. The method ensures compatibility with existing communication standards while providing adaptability for future enhancements. The sub-slot configuration with 2 or 3 symbols allows for efficient handling of different types of data traffic, such as real-time applications requiring low latency or bulk data transfers needing higher throughput. This approach enhances the robustness and scalability of the communication system, making it suitable for diverse deployment scenarios.
7. The method according to claim 5 , wherein the maximum number of repetitive transmissions indicated by the information indicating the repetitive transmission is 6.
The invention relates to wireless communication systems, specifically addressing the challenge of optimizing repetitive transmission control in data packet retransmissions. It involves a method for managing the number of retransmissions of a data packet in a communication network, where a transmitter sends a packet and may retransmit it multiple times if acknowledgments are not received. The method includes determining a maximum allowable number of retransmissions based on control information provided by the network. In this specific aspect, the maximum number of retransmissions is explicitly limited to six, ensuring efficient use of network resources while maintaining reliable data delivery. This limitation helps prevent excessive retransmissions that could degrade network performance or cause congestion. The approach balances reliability and efficiency by capping retransmissions at a predefined threshold, which is particularly useful in high-latency or high-interference environments where repeated transmissions could otherwise lead to unnecessary overhead.
8. The method according to claim 5 , wherein the number of repetitive transmissions is 3 or 6.
The invention relates to a wireless communication system that employs a retransmission mechanism to improve data reliability. The system addresses the challenge of ensuring successful data delivery in environments with high interference or signal degradation by allowing multiple transmission attempts for the same data packet. The core method involves sending a data packet and, if an acknowledgment is not received, retransmitting the packet up to a predefined maximum number of times. The invention specifies that the retransmission count can be set to either three or six attempts, optimizing the balance between reliability and resource efficiency. This approach is particularly useful in scenarios where immediate retransmission is critical, such as in real-time applications or mission-critical communications. By limiting the retransmissions to these specific values, the system avoids excessive overhead while maintaining a high probability of successful data reception. The method can be applied in various wireless standards, including those used in cellular networks, IoT devices, and other communication protocols where retransmission schemes are employed.
9. A user equipment of transmitting an uplink data channel and receiving a downlink data channel, the user equipment comprising: a receiver configured to receive repetitive transmission information of the uplink data channel or the downlink data channel from a base station, and receive the downlink data channel from the base station based on the repetitive transmission information; and a transmitter configured to transmit the uplink data channel to the base station based on the repetitive transmission information, wherein the repetitive transmission information indicates information on a number of repetitive transmissions for the uplink data channel or the downlink data channel, wherein the repetitive transmission is performed based on a unit of a slot or a unit of a sub slot, wherein a redundancy version sequence for the repetitive transmission is formed of 6 elements, and wherein: each element of the sequence is set to one of 4 patterns; a first element pattern is identical to a fifth element pattern of the sequence; a second element pattern is identical to a sixth element pattern of the sequence; and wherein the redundancy version sequence for the repetitive transmission is determined to be one of {0, 2, 3, 1, 0, 2}, {0, 0, 0, 0, 0, 0} and {0, 3, 0, 3, 0, 3}, wherein the repetitive transmission information is received through Downlink Control Information (DCI), wherein the DCI includes a field indicating the number of repetitive transmissions, and wherein when a value of the field indicates a maximum value of the number of repeated transmissions, information on the maximum value of the number of repetitive transmissions is received through RRC signaling.
This invention relates to wireless communication systems, specifically to user equipment (UE) configured for transmitting uplink data and receiving downlink data with repetitive transmission capabilities. The problem addressed is improving reliability and coverage in wireless communications by enabling controlled redundancy in data transmission. The UE includes a receiver and a transmitter. The receiver obtains repetitive transmission information from a base station, which specifies the number of repetitions for uplink or downlink data channels. The information is received via Downlink Control Information (DCI), with a field indicating the repetition count. If the field reaches its maximum value, the exact maximum number is provided via Radio Resource Control (RRC) signaling. The UE then receives downlink data or transmits uplink data based on this information. Repetitive transmissions occur in slot or sub-slot units, with a predefined redundancy version sequence of six elements. Each element follows one of four patterns, where the first and fifth elements are identical, and the second and sixth elements are identical. The sequence can be one of three predefined options: {0, 2, 3, 1, 0, 2}, {0, 0, 0, 0, 0, 0}, or {0, 3, 0, 3, 0, 3}. This structured redundancy improves data reliability in challenging communication conditions.
10. The user equipment according to claim 9 , wherein the sub-slot is configured with 2 or 3 symbols.
The invention relates to wireless communication systems, specifically addressing the configuration of sub-slots in user equipment for efficient data transmission. The technology involves optimizing sub-slot durations to enhance communication performance, particularly in scenarios requiring low latency or high reliability. The user equipment is designed to operate with sub-slots configured to span either 2 or 3 symbols. This configuration allows for flexible scheduling of data transmissions, balancing between shorter sub-slots for reduced latency and longer sub-slots for improved reliability. By supporting both 2-symbol and 3-symbol sub-slots, the user equipment can adapt to varying network conditions and application requirements, ensuring efficient resource utilization and improved communication performance. The sub-slot configuration is dynamically adjustable based on network demands, enabling optimized data transmission in both uplink and downlink scenarios.
11. The user equipment according to claim 9 , wherein the maximum number of repetitive transmissions indicated by the repetitive transmission information is 6.
The invention relates to user equipment (UE) in wireless communication systems, specifically addressing the configuration of repetitive transmissions for reliable data delivery. The UE receives repetitive transmission information from a network, which indicates the maximum number of allowed retransmissions for a given transmission. In this case, the UE is configured to limit its repetitive transmissions to a maximum of six attempts, ensuring efficient use of network resources while maintaining transmission reliability. This configuration helps prevent excessive retransmissions that could degrade system performance or cause unnecessary power consumption in the UE. The limitation on repetitive transmissions is critical for optimizing the balance between data integrity and resource efficiency in high-reliability communication scenarios, such as those required in 5G or other advanced wireless systems. By capping the number of retransmissions, the UE adheres to network-defined constraints, reducing latency and improving overall system throughput. This approach is particularly relevant in scenarios where retransmissions are controlled to avoid congestion or interference, such as in time-sensitive applications or dense network deployments.
12. The user equipment according to claim 9 , wherein the number of repetitive transmissions is 3 or 6.
This invention relates to wireless communication systems, specifically user equipment (UE) configured to handle repetitive transmissions in a network. The problem addressed is optimizing the number of repetitive transmissions to balance reliability and efficiency in wireless communication. The UE is designed to determine a transmission mode based on channel conditions and network requirements, where the transmission mode includes a predefined number of repetitive transmissions. The invention specifies that the number of repetitive transmissions can be set to either 3 or 6, depending on the communication scenario. This ensures that the UE can adapt to varying signal conditions while maintaining efficient use of network resources. The UE may also include a receiver to obtain configuration information from a base station, which may include parameters for determining the transmission mode. The invention aims to improve communication reliability in challenging environments, such as high-interference or low-signal areas, by allowing the UE to adjust the number of transmissions dynamically. The solution is particularly useful in 5G and beyond networks where low-latency and high-reliability communication are critical.
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December 29, 2020
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